Boiling Flask, Round Bottom, Borosilicate Glass (BORO 3.3)
From $2.60 (Ex GST)
- Round bottom supports uniform heating distribution
- Ideal for distillation, reflux, and chemical synthesis
- Requires support ring or heating mantle for use
- Used in organic chemistry, teaching, and research
- Trusted by laboratories across Australia
- Made from LabChoice BORO 3.3 glass – High quality
- Description
Description
Boiling Flask, Round Bottom, Borosilicate Glass (BORO 3.3) is designed for uniform heating and efficient mixing in reflux, distillation, and synthesis workflows where thermal stability and chemical resistance are essential. The round bottom profile promotes even heat distribution and reduces localised hot spots compared with flat bottom vessels, making it ideal for heating mantles, oil baths, and controlled reaction setups. It is widely used in organic chemistry, solvent recovery, sample preparation, and teaching laboratories for boiling, refluxing, and reaction work.
Manufactured from high quality LabChoice BORO 3.3 borosilicate glass, the flask delivers excellent thermal stability, low thermal expansion, and strong resistance to a wide range of laboratory reagents and solvents. BORO 3.3 glass performance aligns with recognised borosilicate standards such as ISO 3585 and ASTM E438 Type I, supporting dependable durability through repeated heating and cooling cycles and daily laboratory handling. Smooth internal surfaces minimise residue retention and support efficient cleaning between runs, while consistent wall thickness improves robustness for routine heating applications.
The round bottom design supports smooth swirling and better mixing, which is valuable for reactions requiring consistent temperature and agitation. For best practice, use an appropriate support method such as a heating mantle, cork ring, or flask support, clamp securely when connecting to condensers or adapters, and avoid sudden temperature changes to reduce thermal shock risk.
Supplied by LabChoice Australia, this BORO 3.3 round bottom boiling flask is widely used across Australian schools, universities, research institutes, and industrial quality control environments where durable, chemically resistant glassware supports repeatable heating and reaction outcomes.
| Item Code | Capacity (ml) | D-(mm) | D1-(mm) | H-(mm) | Pack |
| LC-03-BF0901 | 25 | 42 | 18 | 80 | 1 |
| LC-03-BF0902 | 50 | 51 | 26 | 95 | 1 |
| LC-03-BF0903 | 100 | 64 | 26 | 100 | 1 |
| LC-03-BF0904 | 250 | 85 | 34 | 144 | 1 |
| LC-03-BF0905 | 500 | 105 | 34 | 168 | 1 |
| LC-03-BF0906 | 1000 | 131 | 42 | 200 | 1 |
| LC-03-BF0907 | 2000 | 166 | 42 | 240 | 1 |
| LC-03-BF0908 | 3000 | 195 | 50 | 305 | 1 |
| LC-03-BF0909 | 5000 | 233 | 55 | 345 | 1 |
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Our Reviews
⭐⭐⭐⭐⭐
We ordered a set of customised BORO 3.3 borosilicate glassware for our teaching labs, and LabChoice Australia exceeded every expectation. From the first consultation to final delivery, their team listened carefully, offered expert advice, and ensured every piece matched our specifications perfectly.
The clarity and precision of the glassware are exceptional, and the quick turnaround made setup effortless. It’s refreshing to work with an Australian supplier who genuinely understands laboratory needs and takes pride in quality craftsmanship. We’ll definitely be returning to LabChoice for future glassware requirements
⭐⭐⭐⭐⭐
Our lab required high-precision BORO 3.3 glassware for analytical testing, and LabChoice Australia delivered outstanding results. The ordering process was simple, communication was clear, and every beaker and flask arrived perfectly calibrated and ready for use.
The quality of the glass is exceptional — resistant to heat, easy to clean, and consistently accurate in measurement. It’s reassuring to know there’s an Australian supplier that combines scientific precision with genuine customer care. I’d recommend LabChoice to any research team looking for dependable labware
⭐⭐⭐⭐⭐
We needed a set of customised borosilicate glassware for a specialised project, and LabChoice Australia delivered exactly what we envisioned. The team worked closely with us from design to production, ensuring every detail met our specifications. The craftsmanship is exceptional, and the turnaround time was impressive. It’s reassuring to know we can rely on them for unique, made-to-order pieces
⭐⭐⭐⭐⭐
LabChoice Australia has completely changed the way we source our lab glassware. The quality is consistently top-notch, and every piece meets the precision we need for reliable results. Their team knows their stuff, answers our questions quickly, and always goes the extra mile to help — they’re more like partners than just a supplier.
⭐⭐⭐⭐⭐
We trust LabChoice Australia because they deliver every time. Their borosilicate glassware is durable, accurate, and perfect for the high-heat work we do. Everything arrives well-packed with clear specs, so there are never surprises. It’s reassuring to deal with a supplier who understands both compliance and the demands of a busy lab